We're dividing 306030 by 91 
The aim is to understand the frequency of 91 in 306030.

Let's proceed to step 1:
When dividing 3 by 91, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 91

Advancing to step 2:
91 goes into 30 0 times with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 91

Let's proceed to step 3:
91 goes into 306 3 times with a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 273 from 306 and we're left with 33.
Grab the next digit (0) from the dividend, add it to 33, then carry on: 330 / 91

On to step 4:
When dividing 330 by 91, we get 3 with a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Subtracting 273 from 330 leaves us with 57.
Take the next digit (3) from the dividend and append it to 57, then repeat: 573 / 91

Step 5:
573 divided by 91 is 6 with a remainder of 27.
Put 6 as the next digit of the answer. 
Result so far: 336.0
The remainder is 27 after subtracting 546 from 573.
Bring next digit (0) of the dividend behind the 27 and repeat the process: 270 / 91

Step 6:
If we divide 270 by 91, we get 2 and a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 3362.0
Deduct 182 from 270 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 7:
880 divided by 91 is 9 with a remainder of 61.
Put 9 as the next digit of the answer. 
Result so far: 3362.9
Subtract 819 from 880 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 8:
610 divided by 91 is 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 3362.96
If we take 546 away from 610, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 9:
91 can be fit into 640 7 times, resulting in a remainder of 3.
The next digit of our result is 7. 
Result so far: 3362.967
If we take 637 away from 640, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
30 divided by 91 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 3362.967
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 11:
If we divide 300 by 91, we get 3 and a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 3362.96703
Subtracting 273 from 300 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 12:
91 can be fit into 270 2 times, resulting in a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 3362.967032
Subtracting 182 from 270 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Moving on to step 13:
880 divided by 91 is 9 with a remainder of 61.
Record the quotient 9 as the next digit in the result. 
Result so far: 3362.9670329
Subtract 819 from 880 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 14:
610 divided by 91 is 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 3362.96703296
If we take 546 away from 610, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

After the division, we end up with 3362.96703296 and a remainder of 6.4e-08.